EP1326563A1 - Dispositif neurochirurgical servant a appliquer une therapie thermique - Google Patents

Dispositif neurochirurgical servant a appliquer une therapie thermique

Info

Publication number
EP1326563A1
EP1326563A1 EP01979464A EP01979464A EP1326563A1 EP 1326563 A1 EP1326563 A1 EP 1326563A1 EP 01979464 A EP01979464 A EP 01979464A EP 01979464 A EP01979464 A EP 01979464A EP 1326563 A1 EP1326563 A1 EP 1326563A1
Authority
EP
European Patent Office
Prior art keywords
thermal
tissue
housing
cartridge
communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01979464A
Other languages
German (de)
English (en)
Inventor
Donald J. Larnard
Dan Sachs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seacoast Technologies Inc
Original Assignee
Seacoast Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seacoast Technologies Inc filed Critical Seacoast Technologies Inc
Publication of EP1326563A1 publication Critical patent/EP1326563A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A61F7/123—Devices for heating or cooling internal body cavities using a flexible balloon containing the thermal element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00084—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A61F2007/0056—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water for cooling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A61F2007/0075—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating using a Peltier element, e.g. near the spot to be heated or cooled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/10—Cooling bags, e.g. ice-bags
    • A61F2007/101—Cooling bags, e.g. ice-bags for cooling organs in the body before or during surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A61F2007/126—Devices for heating or cooling internal body cavities for invasive application, e.g. for introducing into blood vessels

Definitions

  • the present invention relates to systems and methods for controlling brain tissue temperature, and in particular to systems and methods for subcranial temperature control of brain tissue through the use of contact cooling devices.
  • Prior art devices and methods affect a thermal change in a body by a systemic approach, meaning that the overall temperature of the entire body is lowered or raised to achieve the advantages noted above. Cooling the body has been particularly effective in surgical applications where reducing metabolism has made it possible to more easily accommodate lengthy operative procedures.
  • An example of this systemic approach includes catheters for transferring heat to or from blood flowing within a patient's vessel. Closed loop heat exchange catheters are also known.
  • Some of the disadvantages of systemic temperature reduction include the stimulation of cardiac arrhythmia, pulmonary edema and coagulopathies. Systemic temperature reduction also results in hypotension and immune suppression.
  • a device and method for localized temperature control of a body part it is desirable to have a device and method for localized temperature control of a body part. Further, it is desirable to provide a way to apply thermal energy to a specific area of tissue, such as the brain, which is not ordinarily directly external to the body in a manner which minimizes trauma and the size of the body opening which must be created to access the tissue area.
  • the present invention overcomes the disadvantages of known systemic and external devices and techniques by providing localized brain cooling with a device placed through the skull.
  • a device for thermally affecting tissue of a patient includes a housing defining an interior volume that is at least partially insertable into an exterior opening in a patient, such as a burr hole though the skull.
  • a thermal member . positioned within the interior volume of the housing includes a thermal input side and a thermal output side to impart a thermal change to the tissue.
  • An exemplary method of treatment using the device includes the steps of exposing tissue to be thermally affected; attaching a thermal device to an anchor point of the body; positioning the thermal member near or on the tissue; and operating the thermal member to thermally change the temperature of the tissue.
  • FIG. 1 is a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention
  • FIG. 2 is a section view taken along section 2 - 2 of FIG. 1 ;
  • FIG. 3 is a side view of a first end of the device;
  • FIG. 4 is an end view of a bottom end of the device;
  • FIG. 5 is a perspective view of another device constructed in accordance with the principles of the invention.
  • FIG. 6 is another perspective view of a device constructed in accordance with the principles of the invention.
  • FIG. 7 is a section view taken along section A - A of FIG. 6;
  • FIG. 8 is a partial sectional view taken along section 8 - 8 of FIG. 7;
  • FIG. 9 is an end view of an alternate structure of an expansion element of the device;
  • FIG. 10 is a section view of an alternative arrangement of a device constructed in accordance with the principles of the present invention.
  • FIG. 11 is another section view of still another alternative arrangement of a device constructed in accordance with the principles of the present invention.
  • FIG. 12 is a side view of the exemplary device of FIGJ shown engaged with a skull
  • FIG. 13 is a side view of the exemplary device of FIG. 8 shown engaged with a skull.
  • FIG. 1 a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention and designated generally as device 10.
  • the device 10 has a housing 12 with a first end 14, a second end 16 and an optional circulation vent 18 for the intake and outlet of a thermally conductive fluid or ambient air.
  • the housing 12 can be constructed of any suitable material, for example metals, plastics or a combination thereof. It is contemplated that the housing 12 has a diameter "D", measured at the widest portion of the device, from less than one centimeter to approximately ten centimeters.
  • the diameter ranges from approximately one centimeter to approximately two centimeters.
  • Optional radial threads 20 are provided on the exterior of the housing 12 to facilitate attachment to bone structure such as a skull.
  • non-threaded arrangements can also be provided or coupled to or on the housing 12, for example, flutes, barbs, ridges or other such elements.
  • Expandable elements can also be used to seal the device to bone structures, such as the skull.
  • FIG. 2 is a section view taken along section 2 - 2 of FIG. 1.
  • the housing 12 is arranged as a circumferential wall which defines an interior space 24.
  • a contact member 26 which can be configured to directly contact a tissue or to contact an intermediate material.
  • the contact member 26 can be constructed of any thermally conductive material, for example, stainless steel, aluminum, copper, titanium, combined metals, alloys, various polymers or other such materials.
  • a thermal member 28 adjacent the contact member 26 is a thermal member 28.
  • the thermal member 28 has a thermal input side 32 in thermal communication with the contact member 26 and a thermal output side 34.
  • the thermal member 28 can be a thermo-electric cooler, for example, a peltier-effect cooler.
  • a thermal dissipation member 33 is provided in thermal communication with the thermal output side 34 of the thermal member 28.
  • a thermal dissipation member is provided in thermal communication with the thermal output side 34 of the thermal member 28.
  • Such devices are known in the art, for example a common thermal dissipation member is a heat sink. However, many alternate components for dissipating thermal energy can be provided.
  • a fluid circulation member 30 Further provided within the housing 12 in the interior space 24 is a fluid circulation member 30.
  • the term "fluid” as used herein generally refers to any flowable substance, including but not limited to gases and liquids.
  • An exemplary fluid circulation member 30 is a cooling fan.
  • the fluid circulation member 30 is positioned such that it circulates a fluid, such as air, across the thermal output side 34 of the thermal member 28 or the optional thermal dissipation member 33 if provided, thereby removing thermal energy dissipated by the thermal member 28.
  • a pump used in association with a thermally conductive liquid can be provided to dissipate thermal energy generated by the output side 34 of the thermal member 28.
  • membrane 36 is provided in thermal communication with the contact member 26.
  • Membrane 36 can be constructed of any bio-compatible material and can be constructed to directly contact tissue. Referring to FIG. 2, the operation of an exemplary device is now discussed in detail.
  • Thermal input side 32 has a reduced temperature relative to the thermal output side 34 which causes a cooling effect at the thermal input side 32.
  • the thermal input side 32 being in thermally conductive contact with the contact member 26, thereby causes a reduction of the relative temperature of the contact member 26.
  • the output side 34 being in thermally conductive contact with the optional thermal dissipation member 33 thereby raises the relative temperature of the thermal dissipation member 33 (creating heat).
  • the concepts of the present invention provide a device 10 for localized cooling of a tissue in a compact package. Alternatively, such a device can subsequently be used for heating tissue locally by reversing the current to the thermoelectric device.
  • FIG. 3 is a side view of an exemplary embodiment of the contact member 26.
  • FIG. 3 shows a contact side 27 having a concave surface as illustrated in phantom line.
  • the amount of curvature can be variable depending on the tissue site to be treated.
  • the concave shape is measured as the center concave distance measured from the contact side 27 perpendicular to a center 29 of the concave region. In exemplary embodiments the concave distance ranges from approximately 0.001 inches to approximately 0.05 inches. In the embodiment shown in FIG. 3, which is placed on the dura mater covering the brain, the concave distance is approximately 0.02 inches.
  • FIG. 4 illustrates an end view of the first end 14 of the device 10, wherein a square- shaped contact member is disposed within the housing 12.
  • one or more access ports 38 are provided for the location of a variety of devices, for example specialty neuro-catheters, thermocouple probes, temperature sensors, pressure sensors or other such devices.
  • an optional insert 40 can be provided to completely or partially obstruct the access port 38.
  • the insert 40 can be constructed from any suitable material, for example, rubber, silicone, aluminum or other such materials. While FIG. 4 shows a square-shaped contact member 26, it is contemplated that various other shapes. can be provided. Additionally, an access port (not shown) can also be provided through the contact member 26 itself to accommodate accessory devices as discussed above.
  • FIG 5 is an exploded view of another configuration for the device, wherein a housing 48 has a wall 50 that defines an inner volume 52 to receive a thermal cartridge 58.
  • the housing includes longitudinal grooves 54 on the inner surface 53 of the wall 50. Radial threads 56 can be provided for securing the housing 48 to the skull.
  • the thermal cartridge 58 has axial slots 60 configured to be slidably engagable with axial grooves 54 of the housing 48.
  • the thermal cartridge 58 includes the exemplary elements as discussed above for applying thermal energy to a tissue site, for example, a contact member, a thermal member, and a cooling fan (not shown).
  • the housing 48 is secured within a skull opening by screwing the radial threads into the bone.
  • the thermal cartridge 58 is then inserted into the inner volume 50 of the housing 48 while aligning the axial slots 60 with the axial grooves 52.
  • the thermal cartridge 58 can be slidably adjusted within the insert housing 48 in order to specifically locate the contact member against the dura matter. Additionally, the thermal cartridge 58 can be moved in response to dura swelling or shrinkage that may occur during treatment.
  • FIG. 5 illustrates an axial groove and slot arrangement, it is contemplated that alternate configurations can be provided. For example, a spiral groove and slot arrangement can be provided which would provide insertion depth adjustment via rotation of the thermal cartridge relative to the housing.
  • FIG. 6 is a perspective view of another feature of the invention, wherein a surface area expansion element 62 is disposed at the first end 14 of the housing 12. The surface area expansion element 62 provides a tissue contact area that is larger than the contact member 26 (not shown).
  • the surface area expansion element 62 has a height "H” measured from a top 64 to a tissue contact area 66 of the surface area expansion element 62 and a deployed diameter "d d " measured from the widest points at a periphery of the surface area expansion element 62.
  • the surface area expansion element 62 has a height to width ratio of approximately one to two.
  • a surface area expansion element 62 constructed in accordance the principles of the present invention can have a deployed diameter d d ranging in size from 5 to 200 mm.
  • An exemplary embodiment has a deployed diameter of 34 to 48 mm.
  • Another exemplary embodiment has a deployed diameter of 34 to 64 mm. Further, an exemplary embodiment can have a height H ranging in size from 1 to 10 mm. In one exemplary embodiment the height H is approximately 4 mm.
  • the surface area expansion element 62 can be provided by several different structures, including, for example, an inflatable plenum such as a bladder or balloon.
  • the expansion element 48 can include foldable, rollable, or compressible, ribbons or resilient thermally-conductive structures.
  • Exemplary resilient materials include rubber, silicon, flexible polymers and other materials known in the art.
  • the surface area expansion element 62 is provided with a structure that allows it to be inserted through a small opening in a body and then deployed to increase the tissue contact area 66.
  • the tissue contact area 66 can have a shape ranging from substantially flat to concave.
  • FIG. 7 is a sectional view taken along section 7 - 7 in FIG. 6.
  • FIG. 7 shows the surface area expansion element 62 having a hollow structure.
  • the surface area expansion element 62 has a wall 68 which defines an interior volume 70 which is filled with a thermally transmissive fluid 72.
  • the contact member 26 is in thermal contact with the interior volume 70 via the thermally transmissive fluid 72 at an interface 74.
  • the contact member 26 is in turn in thermal contact with the thermal member 28.
  • a thermal dissipation member 33 can be provided in thermal communication with the output side 34 of the thermal member 28.
  • the fluid circulation member 30 is provided in fluid communication with the thermal dissipation member 33. In practice, the cooling of the contact member 26 in turn cools the thermally transmissive fluid 72.
  • FIG. 8 is a partial sectional view of a device of the invention taken along line 8 - 8 in FIG. 7.
  • FIG. 8 shows the surface area expansion element 62 attached to the first end 14 of the housing 12.
  • a hollow injection member 76 having a proximal end and a distal end.
  • a circulation member 78 having an outlet 80 and an inlet 82 is in fluid communication with the proximal end of the injection member 76 via the outlet 80.
  • An example of a circulation member 78 is a fluid pump.
  • An exemplary thermally transmissive fluid 72 is a saline solution or other such fluid.
  • the arrangement of the circulation member 78, the outlet 80, the injection member 76, the inlet 82 and the interior volume 70 define a circulation circuit.
  • thermally transmissive fluid 72 is provided within the interior volume 70 and is drawn into the circulation member 78 via the inlet 82. It then is directed through the outlet 80 and in turn the to the proximal end of the injection member 76 to the distal end, which directs the thermally transmissive fluid to a location within the interior volume 70.
  • the circulation member 78 can be in thermal contact with the thermal element 28, thereby affecting the temperature of the thermally transmissive fluid directly, or the thermally transmissive fluid can be affected by direct contact with the contact member 26.
  • FIG. 9 shows an alternate arrangement in which a plurality of injection members 76 are provided within the interior volume 70 to direct thermally transmissive fluid to alternate locations within the interior volume 70.
  • a uniform thermal distribution can be provided throughout the interior volume 70.
  • FIG. 10 is a sectional view of an alternate arrangement of the thermal cartridge 58 shown in FIG. 5.
  • FIG. 10 shows a cartridge wall 84 having a proximal end 86 and a distal end 88 and defining an interior 90.
  • a contact member 26 is attached to the proximal end 86.
  • a thermal member 28 is provided within the interior 90 adjacent and in thermal communication with the contact member 26.
  • a thermal bridge 92 is in thermal communication with the thermal member 28 and is constructed from a thermally transmissive material. Attached to the distal end 88 and in thermal communication with the thermal bridge 92 is a thermal dissipation element 33 which is coupled with a fluid circulation member 30.
  • the location of the thermal member 28 can alternatively be toward the distal end 88.
  • the thermal bridge 92 is provided to allow the thermal dissipation member 33 to be spaced a distance from the thermal member 28 or alternatively the contact member 26. In some embodiments it is desirable to have a thermal dissipation member and a fluid circulation member which are larger than the diameter of the housing of the device. By providing a thermal bridge 92, placement of the thermal member 28 or contact member 26 a distance away from the thermal dissipation member 33 is achieved. While the thermal bridge 92 is described in association with the device shown in FIG. 7, it is contemplated that the thermal bridge 92 and expanded thermal dissipation member 33 can be provided in any of the embodiments of the invention.
  • FIG. 11 illustrates another cartridge configuration for thermal transfer, wherein a fluid conduit 94 is provided in thermal communication with the thermal output side 34 of a thermal dissipation member 33.
  • a thermally transmissive fluid is circulated through the fluid conduit 94.
  • thermal energy is dissipated to the fluid which is then circulated to a remote fluid chiller and then re-circulated through the fluid conduit 94.
  • FIG. 12 depicts a device 10, such as shown in FIG. 1, screwed into a burr hole 98 in a skull 96, wherein a contact element 26 is in thermally conductive contact with dura tissue 100 at a location where treatment is desired.
  • FIG. 13 depicts a device 10, such as shown in FIG. 8, shown screwed into a burr hole 98 in a skull 96.
  • Attached to the first end 14 of the device 10 is a surface area expansion element 62.
  • the surface area expansion element 62 is configured to fit within a space 102 between the dura tissue 100 and the skull 96 without substantially damaging dura tissue 100.
  • the surface area expansion element 62 can have a flattened configuration as described in more detail herein.
  • such a surface area expansion element 62 can be configured to be placed into subdural space within a body to be treated.
  • the present invention provides a thermocooler based device which is used to impart a thermal change on a tissue medium.
  • the present invention advantageously provides a user with an ability to control the temperature of a localized region of brain tissue.
  • a procedure using the thermocooling device is accomplished by inserting the device into a burr hole in the skull.
  • An exemplary application is to directly contact the brain tissue with the thermocooling device cooling plate in order to lower the localized brain temperature as a neuroprotective measure in a post-stroke condition.
  • the thermocooling device 10 is used to cool localized regions of the brain in a brain trauma patient as a way of lowering cerebral metabolic requirements and minimizing brain edema.
  • thermocooling device 10 can be used in any post-operative trauma situation when the possibility of cerebral edema exists such that the cerebral edema is desired to be abated or minimized.
  • the above described device can be used in other parts of the body in instances where local tissue temperature needs to be controlled or modulated. In such instances, thermal therapy may involve using either chilled or heated portions of the device to achieve the desired result.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

Dispositif servant à exercer un effet sur la température d'un tissu et comprenant un boîtier définissant un volume intérieur pouvant être inséré, au moins en partie, dans une ouverture extérieure pratiquée chez un patient. Un élément thermique placé à l'intérieur du volume intérieur du boîtier comporte un côté d'entrée thermique et un côté de sortie thermique permettant d'appliquer une modification thermique au tissu.
EP01979464A 2000-10-05 2001-10-04 Dispositif neurochirurgical servant a appliquer une therapie thermique Withdrawn EP1326563A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23831400P 2000-10-05 2000-10-05
US238314P 2000-10-05
PCT/US2001/031110 WO2002028330A1 (fr) 2000-10-05 2001-10-04 Dispositif neurochirurgical servant a appliquer une therapie thermique

Publications (1)

Publication Number Publication Date
EP1326563A1 true EP1326563A1 (fr) 2003-07-16

Family

ID=22897360

Family Applications (4)

Application Number Title Priority Date Filing Date
EP01979508A Withdrawn EP1326564A1 (fr) 2000-10-05 2001-10-04 Dispositif extensible pour traitement thermique comportant un element en spirale
EP01975694A Withdrawn EP1326561A1 (fr) 2000-10-05 2001-10-04 Dispositif neurochirurgical servant a appliquer une therapie thermique et comprenant un element spirale
EP01979464A Withdrawn EP1326563A1 (fr) 2000-10-05 2001-10-04 Dispositif neurochirurgical servant a appliquer une therapie thermique
EP01977396A Withdrawn EP1326562A1 (fr) 2000-10-05 2001-10-04 Dispositif expansible destine a une therapie thermique

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP01979508A Withdrawn EP1326564A1 (fr) 2000-10-05 2001-10-04 Dispositif extensible pour traitement thermique comportant un element en spirale
EP01975694A Withdrawn EP1326561A1 (fr) 2000-10-05 2001-10-04 Dispositif neurochirurgical servant a appliquer une therapie thermique et comprenant un element spirale

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP01977396A Withdrawn EP1326562A1 (fr) 2000-10-05 2001-10-04 Dispositif expansible destine a une therapie thermique

Country Status (4)

Country Link
US (7) US6652566B2 (fr)
EP (4) EP1326564A1 (fr)
CA (4) CA2425059A1 (fr)
WO (4) WO2002028328A1 (fr)

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US6652566B2 (en) 2003-11-25
US20020116040A1 (en) 2002-08-22
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US20020091428A1 (en) 2002-07-11
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US20040167468A1 (en) 2004-08-26
US6648907B2 (en) 2003-11-18
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US20040049250A1 (en) 2004-03-11
US20020068902A1 (en) 2002-06-06
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US6899726B2 (en) 2005-05-31
US6660026B2 (en) 2003-12-09
CA2425015A1 (fr) 2002-04-11
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WO2002028331A1 (fr) 2002-04-11
US6743200B2 (en) 2004-06-01

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